K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2018-06-27T22:00:50.638364Z
K 7
svn:log
V 206
Correct r335242. Use unsigned cast instead of abs(). Using abs() gives
incorrect result when ticks has already wrapped, and are about to reach
the cr_ticks value (cr_ticks - ticks < hz).

Submitted by:	bde

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